Pocket compass

For experiments on magnetism, as an indicator of a magnetic field (magnets and their poles, attractive force, generation of a magnet);
Compass with magnetic needle mounted on very low-friction bearings, the north direction of the needle is dark
Housing: black plastic, transparent lid, with carrying loop
Scale: on the bottom, graduation in 2°
Needle length: 24 mm
Dimensions: D=37 mm, H=11 mm
Mass: 6 g